Hermes application execution

Basically, the Hermes application is a set of Hermes event handler functions and nothing more. The source code could be split into different WASM components, but they will have the same state specified for this Hermes application.

Application's state initializes during the application initializing process and mainly based on the configuration of the Hermes runtime extensions config files.

For each event handling execution, the application's state remains consistent and immutable. It means that before any event processing, it is made a copy of the initial application's state, this copy used during the execution and removed after it. So the overall application state remains the same.